कोशिश गोल्ड - मुक्त
WHAT IS SUNBURN?
How It Works UK
|Issue 194
How solar rays can leave us red, sore and irritated
Sunlight is made up of different wavelengths of light, such as the visible light that we see as colours in the electromagnetic spectrum. Within that spectrum are two wavelengths of invisible ultraviolet light, called ultraviolet A and B. Ultraviolet B (UVB) is a high-energy wavelength and the main culprit when it comes to getting sunburned.
यह कहानी How It Works UK के Issue 194 संस्करण से ली गई है।
हजारों चुनिंदा प्रीमियम कहानियों और 10,000 से अधिक पत्रिकाओं और समाचार पत्रों तक पहुंचने के लिए मैगज़्टर गोल्ड की सदस्यता लें।
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Issue 212
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